Coupling-yoke.



J. A. JACKSON.

ooUPLmG You.

APPLICATION FILED JAH.20, 1908. 946,603 Patented Jan. 18,1910

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mi Q Ik W\ INVENroR JOHN AJACKSON UNITED STATES EATENT- oEEroE.

JOHN A JACKSON, .CHICAGQ ILLINQIS, ASSIGNOR F ONE-HALF T0 DEXTER L. i PHIPPS, OF CHICAGO, ILLINGIS.

coUrLING-YQKE.

l i. Specification of Letters Patent. Patented 1311,18 1910, Application led January 2D, 1908. Serialv No. 411,727. I

forms of couplers and draft rxgglngs may be operatively connected without the use of bolts, rivets or other like fastenings to transmit thrusts and strains to the shock absorbing members without appreciable lateral or torsional effect on the latter.

The invention consists in the matters hereinafter set forth, and more particularly pointed out in the appended claims.4

In the drawings,l Figure 1 is a plan view, partially in section, of a draft mechanism having a coupler yoke embodying features of the invention, together with adjacent portions of the draft timbers and sills of a carframe. Fig. 2 is avvie'w ofl the yoke and inner end or butt of a standard coupler,

'showing the section line y-g/ on which Fig. 1 is taken. Fig. 1s a view m section of the yoke and coupler on or about lineof Fig. 1.

Referring to the drawings, 1 indicates a draft rigging of any preferred standard type secured as by draft timbers 2 or in any suitable way to the main sillsf-or nnderframc of a car and provided-"withshock absorbing lhembers as for example, transverse follower plates 3 backed by springs 4, yfriction blocks or any other of the'well -known butl'er devices. A coupler 5 of standard type is connected to the draft rigging by a yoke that has a body-consisting of parallel top and bottom members 6 with end stops 7 and Sand properly disposed cross-stop 9 all integrally united or formed in one piece, and suitably ribbed and flanged for strength and lightness, the stops being disposed and arranged to adapt them for the particular form of draft rigging -used and to engage the shock absorbing members so as tohave lateral play thereon. Preferably the rear ends of the top and bottom members are arched together to form a backing or brace 10 for the rear stop 8. The horizontal top and bottom members extend forwardof the front stop and form with perpendicular side wingsll a.

butt 12 of the coupler 5. The outer face 13 of the front end stop'is crowned to act as a center-bearing abutment for the inner end of the coupler, while the extended wings 11 are slotted to register with the horizontal elun-4 gated transverse slot 15 usual in a2 standard coupler. k transverse pin or key 1G loosely engaging the alined slots locks the parts together.

The inner faces ,17 ofthe wings 11 are transversely crowned to permit slight lateral rocking motion of the coupler thereon, and the latter may have marginal flanges 18 around its transverse slot as bearing surfaces against the winfrs. The coupler butt may also be enlarged vertically to more closely engage the top and bottom walls of the coupler yoke and to increase the-mass of metal behind the transverse slot.l Where the coupler yoke head lies normally-between the draft timbers' or 'draw plates of .the draft rigging, the latter'prevent endwise displacement of the key 16. By this method of construction, the slight lateral oscillations of the coupler head do not bring an rigging.

The shocks against the coupler are transmitted directly to the yoke by the coupler butt which bears centrally against the forward yoke stop, while the 'ey whose greatest cross-section lies in the plane of greatest strain, transmits the draft load directly to the top and bottom members ofthe yoke. .As the latter is integral, there are no rivets I. or bolts to shear oil or work loose. -The frame or body of theyoke may be varied in form for attachment to different designs of draft rigging,

Other changes-may be made in the details of construction without departing from the torsional strains or shocks on the dra t yoke head to loosely engage the inner end 'or witlrout altering the yoke head whlch is adapted to receive the butt of altered V:faces of the spirit of the invention, and I do not limitmyself to any particular form or arrangement of arts.

What claim as my invention is 1. The combination with a draft rigging and a coupler having a horizontal transverse elt'thnou h its inner end, of a one iece coupler yoe operative] engaging the raft rigging having a hea with crowned end face on which the inner end of the couplerbears and parallel perpendicular'side wmgs with transversely crowned faces bearin against the slotted faces of the inner end o the coupler, and a key assin through the 'wings and slotted coup er an holding the coupler end in -contact with oke head. i 2. In com ination with a draft rigging the crownedhaving transverse follower plates, of acoupl leryoke in the form of an elongated loop with parallel sides that 'embraces and rests on thefollower plates and with transverse sto s adapted to' contact with the several JOHN A. JACKSON.

ates, a pair of side wings parallel 4- Witnesses:

H. J. St'naismns,4 CJ D. Enum.

plane of the loop extending from the enga mg a 

